Improvement in bob-sleds



F. DILLON.

1 BOB-SLED.

No. 171,271. Patented Dec. 21,1875.

WITNESSES J A INVENTOR m 1 ATTORNEYS N. PETERS, FNOTO-LITHDGRAPHER.WASHINGTON. D C.

' Walcott, in the county of Wayne and State of -to the annexed drawings,making a part of consists in novel attachments to the rear sled,

thereon represented. The letter a represents UNITED STATES PATENTOFFICE.

FRANCIS DILLON, OF WALOOTT, NEW YORK.

IMPROVEMENT IN BOB-.SLEDS.

Specificationforming part of Letters Patent No. 171,271, dated December21 1875; application filed May 15, 1875. i

To all whom it may concern:

Be it known that I, FRANCIS DILLON, of

New York, have invented a new and valuable Improvement in Bob-SledRollers; and I do hereby declare that the following is a full, clear,and exact description of the construction and operation of the same,reference being had this specification, and to the letters and figuresof reference marked thereon. Figure 1 of the drawing is a representationof a side elevation of my device, and Fig. 2 is a plan "iew of the same.Fig. 3 is a transverse sectional view, and Fig. 4; is a detail "iew.

My invention relates to bob-sleds; and it as hereinafter described,which are designed to prevent strain or breakage when moving over roughor uneven surfaces.

The letter A of the drawings represents my rear sled, which is,preferably, connected with the front sled by means of the tongue B, at-'tached to the reach 0, as shown; I) representsan arched and flangedplate, which is secured by bolts or otherwise'to the top of each of thesled-runners. This plate may be constructed either of wood or metal, andits office is to serve as a track and guide for the rollers hereinaftermentioned, and the movable bolster to which said rollers are attached.The plate D is constructed with a swelled or circular-shaped track, a,for the rollers, as shown on Fig. 4 of the drawings, the respective endsof which are curved upward, as

a flange, curved upwardly on the outside of the plate, the line ofcurvature correspondingwiththe plane of the track forthe rollers abovedescribed. H represents an axle, formrear sled, to which the axle H androller G v are attached, as shown on Fig. 3. One of these axles androllers is connected with each end of the bolster, and a flanged andcurved plate is attached to each runner of the sled.

I am aware that a sled has heretofore been constructed in which thebolster is connected with the way by means of a rounded bearing fittinginto adepression, for the purpose of allowing an oscillating movement ofthe hob, and employing frictionrrollers to obviate the friction in theend movement of the b'ob, as shown in Letters Patent granted to J.Stevens,

dated January 10, 1865, No. 45,874; and I therefore lay no claim to suchinvention.

What I claim as new, and desire to secure by Letters Patent, is-

In bob-sleds, the plate D, having curved track a, and flange a, bothcurved upward correspondingly with the plane of the track, in

combination with the axle H, forming a bearing for the roller G, andprovided with a rectangular hook, c, substantially as and for thepurpose set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

v FR ANOIS DIIILON.

Witnesses EBEN W. N EWBERRY, HIRAM MERKER.

